Suppr超能文献

大肠杆菌镁离子 - 三磷酸腺苷酶缺陷型突变体中主动运输的恢复

Restoration of active transport in an Mg2+-adenosine triphosphatase-deficient mutant of Escherichia coli.

作者信息

Rosen B P

出版信息

J Bacteriol. 1973 Dec;116(3):1124-9. doi: 10.1128/jb.116.3.1124-1129.1973.

Abstract

A neomycin-resistant mutant of Escherichia coli, NR70, lacking membrane-bound Mg(2+)-adenosine triphosphatase (EC 3.6.1.3) activity has been isolated. Both whole cells and membrane vesicles exhibit a reduced ability to accumulate amino acids and sugars. Other membrane-related functions such as oxygen consumption, the in vivo hydrolysis of o-nitrophenyl-beta-d-galactoside, and the phosphoenolpyruvate-dependent phosphotransferase system did not exhibit reduced activities in NR70. Amino acid transport could be partially restored by the addition of N,N'-dicyclohexylcarbodiimide. The results suggest that a role of the Mg(2+)-adenosine triphosphatase may be to participate in the coupling of energy derived from the electron transport chain to other processes such as transport.

摘要

已分离出大肠杆菌的一种新霉素抗性突变体NR70,其缺乏膜结合的Mg(2+)-三磷酸腺苷酶(EC 3.6.1.3)活性。完整细胞和膜囊泡积累氨基酸和糖的能力均降低。其他与膜相关的功能,如耗氧量、邻硝基苯基-β-D-半乳糖苷的体内水解以及磷酸烯醇丙酮酸依赖性磷酸转移酶系统,在NR70中并未表现出活性降低。添加N,N'-二环己基碳二亚胺可部分恢复氨基酸转运。结果表明,Mg(2+)-三磷酸腺苷酶的作用可能是参与将电子传递链产生的能量与其他过程(如转运)偶联起来。

相似文献

引用本文的文献

3
Partial assembly of the yeast mitochondrial ATP synthase.酵母线粒体ATP合酶的部分组装
J Bioenerg Biomembr. 2000 Aug;32(4):391-400. doi: 10.1023/a:1005532104617.

本文引用的文献

3
THE ROLE OF PERMEASE IN TRANSPORT.通透酶在运输中的作用。
Biochim Biophys Acta. 1964 Jan 27;79:177-200. doi: 10.1016/0926-6577(64)90050-6.
6
Transport across isolated bacterial cytoplasmic membranes.跨分离的细菌细胞质膜转运。
Biochim Biophys Acta. 1972 Aug 4;265(3):367-416. doi: 10.1016/0304-4157(72)90014-7.

文献检索

告别复杂PubMed语法,用中文像聊天一样搜索,搜遍4000万医学文献。AI智能推荐,让科研检索更轻松。

立即免费搜索

文件翻译

保留排版,准确专业,支持PDF/Word/PPT等文件格式,支持 12+语言互译。

免费翻译文档

深度研究

AI帮你快速写综述,25分钟生成高质量综述,智能提取关键信息,辅助科研写作。

立即免费体验